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Cooking Stimulated Big Leap In Human Cognition

Hugh Pickens writes "For a long time, humans were pretty dumb, doing little but make 'the same very boring stone tools for almost 2 million years,' says Philipp Khaitovich of the Partner Institute for Computational Biology in Shanghai. Then, 150,000 years ago, our big brains suddenly got smart. We started innovating. We tried different materials. We started creating art and maybe even religion. To understand what caused the cognitive spurt, researchers examined chemical brain processes known to have changed in the past 200,000 years. Comparing apes and humans, they found the most robust differences were for processes involved in energy metabolism. The finding suggests that increased access to calories spurred our cognitive advances, although definitive claims of causation are premature. In most animals, the gut needs a lot of energy to grind out nourishment from food sources. But cooking, by breaking down fibers and making nutrients more readily available, is a way of processing food outside the body. Eating (mostly) cooked meals would have lessened the energy needs of our digestion systems, thereby freeing up calories for our brains. Today, humans have relatively small digestive systems and allocate around 20% of their total energy to the brain, compared to approximately 13% for non-human primates and 2-8% for other vertebrates. While other theories for the brain's cognitive spurt have not been ruled out, the finding sheds light on what made us, as Khaitovich put it, 'so strange compared to other animals.'"

23 of 473 comments (clear)

  1. AUGGGHHH by nawcom · · Score: 5, Funny

    We man got smarts by cooking meats you vegan bitches!!! UGH-UGH-UGH-UGH-UGH (think Home Improvement)

    1. Re:AUGGGHHH by ScreamingCactus · · Score: 5, Funny

      Yeah that's exactly what women look for in a man: intelligence.

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      The path to enlightenment is truly through homemade drugs!
    2. Re:AUGGGHHH by rrkap · · Score: 5, Funny

      It helps that we cooked veggies too.

      I mean, what is a burger without pickles, grilled onions, grilled mushrooms, and bread?

      Meatloaf.

      --
      I like my beverages with warning labels!
    3. Re:AUGGGHHH by samurphy21 · · Score: 3, Funny

      I think it's fairly obvious that we ARE regressing as a species, though I wouldn't blame it on sushi since the Japanese are among the most industrious and clever folks on the planet.

    4. Re:AUGGGHHH by Dog-Cow · · Score: 4, Funny

      Your sig is oddly and disturbingly appropiate.

    5. Re:AUGGGHHH by ozmanjusri · · Score: 4, Funny
      You're the second person in two days to say that =]

      What did the last one taste like?

      --
      "I've got more toys than Teruhisa Kitahara."
  2. well.... by pxlmusic · · Score: 4, Funny

    still no explanation for Steak-umms

    --
    "If for any reason you're not satisfied with our service, I hate you."
    1. Re:well.... by smallfries · · Score: 3, Funny

      Yet it does explain the entire "raw" food movement

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      Slashdot: where don knuth is an idiot because he cant grasp the awesome power of php
  3. Suddenly... by fahrbot-bot · · Score: 3, Funny

    Then, 150,000 years ago, our big brains suddenly got smart.

    I'm betting there's a giant black obelisk involved ... (cue weird music)

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    It must have been something you assimilated. . . .
    1. Re:Suddenly... by dartmongrel · · Score: 3, Funny

      "my god, its full of hamburgers!"

  4. If that was true.... by Jailbrekr · · Score: 4, Funny

    then America would be choke full of obese geniuses.

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    Feed the need: Digitaladdiction.net
    1. Re:If that was true.... by 2nd+Post! · · Score: 3, Funny

      No, the geniuses are the ones who aren't obese. They've figured out how to channel 30% of their energy into their brains (and in the process, not becoming fat).

  5. Re:So... by Rosco+P.+Coltrane · · Score: 4, Funny

    If you give them a couple million years to mutate, yes. Provided my step-mother isn't the one who cooks the animals meals of course, in which case they'd devolve faster than you can say "that steak is raw!".

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    "A door is what a dog is perpetually on the wrong side of" - Ogden Nash
  6. Evolve - eat pre-processed food by xzvf · · Score: 3, Funny

    If we could get all our food preprocessed (already chewed with the waste removed) we could send more resources to the brain and less to the digestive system. We have the technology.

  7. Juice me up! by Goalie_Ca · · Score: 3, Funny

    So are fat people considered over-clockers?

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    Go canucks, habs, and sens!
  8. Wait, what? by CorporateSuit · · Score: 5, Funny

    Something seems out of order here...

    1. Sit on duff for 2 million years being too stupid to invent anything
    2. ???
    3. Invent cooking
    4. Get smart enough to invent things, like cooking
    5. Profit!

    I've heard homeless men coming up with more logical explanations than this.

    --
    I am the richest astronaut ever to win the superbowl.
  9. And Prometheus said... by russotto · · Score: 3, Funny

    Fire. Is there ANYTHING it can't do?

    1. Re:And Prometheus said... by thermian · · Score: 5, Funny

      Fire. Is there ANYTHING it can't do?

      Stop your liver being pecked out each day by a giant Eagle, apparently.....

      --
      A learning experience is one of those things that say, 'You know that thing you just did? Don't do that.' - D. Adams
  10. Re:So... by pilgrim23 · · Score: 4, Funny

    Only if a large stone obelisk moves into the neighborhood at the same time...

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    - Minutus cantorum, minutus balorum, minutus carborata descendum pantorum.
  11. Re:Humans were carnivores at the beginning by carlcmc · · Score: 4, Funny

    Of course there was a time when we were completely vegetarian. The diet in the Garden of Eden was fruits and vegetables. It wasn't until after the flood that God gave permission to eat animal flesh. (obviously we don't share the same view of the history of the human race).

  12. Re:Humans were carnivores at the beginning by cayenne8 · · Score: 4, Funny
    "Humans at first only ate meat. Very soon, they started eating plants too. And much lately, some of them disliked meat and became vegetarians."

    Then we got really smart....and started fermenting our veggies/grains, and invented BEER!! That way we could drink it!!

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    Light travels faster than sound. This is why some people appear bright until you hear them speak.........
  13. Re:Medium-Well is the best by retchdog · · Score: 4, Funny

    1" thick and well-marbled
    Greek seasoning
    rubbing... on the top side
    half an hour getting them up

    Suffice it to say, you don't have to read your post twice to find the subtext.

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    "They were pure niggers." – Noam Chomsky
  14. Re:So... by MidnightBrewer · · Score: 4, Funny

    Why on earth would we have big brains that were dumb? That doesn't make any sense from a survival aspect. Carrying around extra weight and a non-functional large brain?

    If this theory is true, then yes, we should suddenly see the rise of cat and dog civilizations. They will probably be so super-intelligent that they will actually enslave another, dumber race of creatures to take care of their daily needs. This will give them ample time to bask in the luxury of doing absolutely nothing at all besides playing, eating, sleeping and toying with their slaves.

    As the parent said, though, that could never happen.

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    "Give a man fire, and he'll be warm for a day; set a man on fire, and he'll be warm for the rest of his life